how big is this pig? You need to mix biomycin (LA 200) and Tylan 200 together in the same syringe....if it is a small pig hit him hard, 5cc of each, ?Give it in about 3 different sites in the neck to prevent a really big knot and pain. You can give Banamine (like advil) at the rate of 1cc/100# to help bring down fever. It is a fast pneumonia I bet.www.geocities.com/gonzalesshowpigs